Delphion Intellectual Property Network Patent Search

Guy Claret - Control for electronic amplifiers (Current)

Cesar Diaz - Reverb and selectable tremolo and vibrato electron tube preamplifier (Expired)

Alan Grant - Push-pull audio amplifier with crossover distortion compensation (Expired)

Guy Hedrick - Amplifier for a guitar or other musical instrument (Current)

Dennis Kager  - Control circuit for varying power output of push-pull amplifiers (Expired)

Edward Jahns - Distortion Control Circuit (Current)

William Laub - Amplifier distortion circuit for electric guitars (Current)

Timothy O'Brien - Continuously variable circuit for producing an output signal having a continuously variable amount of clean and distorted signals (Current)

Thomas Paddock - Speaker simulator (Current)

Aspen Pittman (Groove Tubes) - Emulated guitar loudspeaker (Current)

Tom Scholz - Constant Distortion Volume Control (Current)

Tom Scholz - Constant Distortion Volume Control Unit (Current)

Tom Scholz - Volume Control Device (Current)

Tom Scholz - Speaker Volume Control (Current)

Randall Smith (Mesa) - Amplifier with mains voltage reduction (Current)

Randall Smith (Mesa) - Dual mode music instrument amplifier (Current)

Randall Smith (Mesa) - Dual mode music instrument preamplifier (Current)

Randall Smith (Mesa) - Power amplifier capable of simultaneous operation in two classes (1985) (Expired)

Randall Smith (Mesa) - Power amplifier capable of simultaneous operation in two classes (1986) (Expired)

Randall Smith (Mesa) - Power amplifier with modified dynamic response (Current)

Randall Smith (Mesa) - Power amplifier with switchable voicing elements (Current)

Randall Smith (Mesa) - Programmable controls for vacuum tube preamplifier (Expired)

Randall Smith (Mesa) - Selectable dual rectifier power supply for musical amplifier (Current)

Randall Smith (Mesa) - Vacuum tube amplifier with selectable power devices (Current)

Jack Sondermeyer (Peavey) - Amplifier arrangements with high damping factor (Current)

Jack Sondermeyer (Peavey) - Audio power amplifier with frequency-selective damping factor controls (Current)

Salvatore Trentino - Output power selection apparatus for a tube-type amplifier (Current)

Salvatore Trentino - Output tube bias selection apparatus for tone alteration in a tube-type audio amplifier (Current)

Salvatore Trentino - Phase inverter selection apparatus for tone alteration in tube-type amplifier (Current)

David Zimmerman (Maven Peal): Variable control of electronic power supplies (1995) (Current)

David Zimmerman (Maven Peal): Variable control of electronic power supplies (1996) (Current)